Automation System
What is the difference between integral and derivative control?

derivative control does not eliminate offset error
integral control has slower response to an error signal.
None of these
derivative control responds to a change in the rate of change in the error signal
All of these

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Automation System
D/A (digital to analog) conversion:

has to be sampled at 1/2 the highest input frequency
None of these
must be fed through a filter to reproduce the original signal accurately
results in a binary code as the final output
both (b) and (c)

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